8 Also he sent forth a dove from him, to see if the waters were abated from off the face of the ground;
Three chapters of Genesis are devoted to the great judgment in the days of Noah: a destruction of the sin-power of the flesh by water.
...The signal victory of Yahweh's power was demonstrated in the flight of the dove (Heb. yonah -- thus the "sign of the prophet Jonah," which later the Lord Yahshua highlighted as the only sign for his generation). The dove was sent from the ark but found no rest and ultimately returned -- as Jewry was first exiled from the joy of God's favour, and yet returned to the Land in these last days.
It was sent a second time, and returned with an olive branch -- and Israel will ultimately recognise the symbol of peace when confronted with the Prince of Peace. Finally the dove was sent from the ark and found its home, not to return again -- as Israel will ultimately find its home, and not seek again the wandering spirit.
This grand sign indicates that the time of divine judgment will give way to the happiness of the kingdom, as Noah came forth and Yahweh smelt a "sweet savour" in the joy of the Kingdom.